2009

7.7

1996

7.1

2006

6.4

2013

7.8

1972

6.7

1987

6.8

2014

6.9

2020

6.5

1977

5.4

2002

6.5

1987

6.2

1999

5.1

6.5

1976

7.5

1993

5.8

2021

6.6

1941

7.5

1996

5.8

1987

7.1

2022

6.2